Malicious PDF — malware analysis report

Static analysis result for SHA-256 61070e60e565b857…

MALICIOUS

PDF

76.9 KB Created: 2020-12-11 17:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3d09ce50354b24a84aab713466daa71d SHA-1: df31e991021c410715bd8de2c03be1de268a65ee SHA-256: 61070e60e565b857c1125a33659fd13e823ad807ac9f6fbec14fdc5b98f1119f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/123?utm_term=eso+nirnhoned+vs+sharpened+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5fb5f81cdb170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5fa4cded71c3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443814/normal_5fb292bccf66d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rerinago/bachelorette_full_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc632f2c-6930-4bc2-a3b8-45995e77583e/98064674811.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/75091047428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b68aec73-58a3-487f-9af4-f1e46ed041a9/pinnacle_high_school_band_camp_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66c783dfdd95b60faf88d/t/5fc9df4d55485c3109b400a1/1607065424377/did_u_know_facts_about_the_human_body.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/cakephp_3_format_date.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/cygnets_of_henley_ofsted_report.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB1 5304 bytes
SHA-256: 39ce60c46c0903068313e3d475d1ce0a73406f1bfb332dee5a5b6bb28d4f890f
font_01_sfnt_off000101be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BE 10876 bytes
SHA-256: a98801e8bd28d070b1aa91e0f6f715a8b3637f97f8d67954dbde56f0ad90763b